Re: [Moosefs-users] HELP!!! 250T Data lost!

[陈钢 <yik...@gm...>]

I backup all files already.
yes, i use metadatarestore with -d option,not work.

how can i contact you ? gtalk?

2012/3/7 Ken <ken...@gm...>

> Hi, chengang
>
> I think you should try more, and post detail here. Someone must resolve it.
> Maybe you will lost some data in last few minutes, but 250T should be
> saved.
>
> At first, BACKUP all files:
>   /var/lib/mfs/* on master
>   /var/lib/mfs/* on mfsmetalogger
>
> about restore error:
>
> file 'metadata.mfs.back' not found - will try 'metadata_ml.mfs.back'
>> instead
>> loading objects (files,directories,etc.) ... loading node: read error:
>> ENOENT (No such file or directory)
>> error
>> can't read metadata from file: .//metadata_ml.mfs.back
>>
> How did you run mfsmetarestore?  add -d options?
> If stat(datapath + metadata_ml.mfs.back) fail, these error will occur.
> Maybe use strace will show why stat fail exactly.
>
> ps: I am in Beijing now and I can provide more help.
>
> HTH
>
> -Ken
>
>
>
> On Wed, Mar 7, 2012 at 10:21 AM, 陈钢 <yik...@gm...> wrote:
>
>> can not start mfsmaster with the file "78962688 Mar  6 17:18 metadata.mfs
>> "..
>> i tried that. :(
>>
>> 2012/3/7 Ricardo J. Barberis <ric...@da...>
>>
>> El Martes 06/03/2012, 陈钢 escribió:
>>> > on master
>>> [ ... ]
>>> > -rw-r-----  1 mfs  mfs   78962688 Mar  6 17:18 metadata.mfs
>>> > -rw-r--r--  1 root root         8 Jul  4  2011 metadata.mfs.empty
>>> > -rw-r-----  1 mfs  mfs       5984 Mar  6 12:00 sessions.mfs
>>> > -rw-r-----  1 mfs  mfs          0 Mar  6 16:46 sessions.mfs.tmp
>>> > -rw-r-----  1 mfs  mfs     131072 Mar  6 17:18 stats.mfs
>>>
>>> You have /var/lib/mfs/metadata.mfs on the master, it might not be corrupt
>>> after all?
>>>
>>> I'd suggest:
>>>
>>> - backup /var/lib/mfs to another disk/server (for later recovery if
>>> needed)
>>> - make sure you have free space in your main disk
>>> - then simply try to start mfsmaster
>>> - check mfs.cgi (web interface) if it looks OK
>>>
>>>
>>> BUT: if you can, wait for confirmation from Michał Borychowski first, in
>>> case
>>> what I'm telling you is not safe.
>>>
>>>
>>> (BTW: You have Reply-To set to che...@cp..., I don't know if that's
>>> intentional on your part)
>>>
>>> Hope it helps,
>>> --
>>> Ricardo J. Barberis
>>> Senior SysAdmin / ITI
>>> Dattatec.com :: Soluciones de Web Hosting
>>> Tu Hosting hecho Simple!
>>>
>>> ------------------------------------------
>>>
>>
>>
>>
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>